How to use squashPtrImpl method of prog Package

Best Syzkaller code snippet using prog.squashPtrImpl

any.go

Source:any.go

...121	}122	res0 := arg.Res123	size0 := res0.Size()124	var elems []Arg125	target.squashPtrImpl(arg.Res, &elems)126	newType := target.getAnyPtrType(arg.Type().Size())127	arg.ref = newType.ref()128	arg.Res = MakeGroupArg(newType.Elem, DirIn, elems)129	if size := arg.Res.Size(); size != size0 {130		panic(fmt.Sprintf("squash changed size %v->%v for %v", size0, size, res0.Type()))131	}132}133func (target *Target) squashPtrImpl(a Arg, elems *[]Arg) {134	if a.Type().BitfieldLength() != 0 {135		panic("bitfield in squash")136	}137	var pad uint64138	switch arg := a.(type) {139	case *ConstArg:140		target.squashConst(arg, elems)141	case *ResultArg:142		target.squashResult(arg, elems)143	case *UnionArg:144		if !arg.Type().Varlen() {145			pad = arg.Size() - arg.Option.Size()146		}147		target.squashPtrImpl(arg.Option, elems)148	case *DataArg:149		if arg.Dir() == DirOut {150			pad = arg.Size()151		} else {152			elem := target.ensureDataElem(elems)153			elem.data = append(elem.Data(), arg.Data()...)154		}155	case *GroupArg:156		target.squashGroup(arg, elems)157	default:158		panic("bad arg kind")159	}160	if pad != 0 {161		elem := target.ensureDataElem(elems)162		elem.data = append(elem.Data(), make([]byte, pad)...)163	}164}165func (target *Target) squashConst(arg *ConstArg, elems *[]Arg) {166	if IsPad(arg.Type()) {167		elem := target.ensureDataElem(elems)168		elem.data = append(elem.Data(), make([]byte, arg.Size())...)169		return170	}171	v, bf := target.squashedValue(arg)172	var data []byte173	switch bf {174	case FormatNative:175		for i := uint64(0); i < arg.Size(); i++ {176			data = append(data, byte(v))177			v >>= 8178		}179	case FormatStrDec:180		data = []byte(fmt.Sprintf("%020v", v))181	case FormatStrHex:182		data = []byte(fmt.Sprintf("0x%016x", v))183	case FormatStrOct:184		data = []byte(fmt.Sprintf("%023o", v))185	default:186		panic(fmt.Sprintf("unknown binary format: %v", bf))187	}188	if uint64(len(data)) != arg.Size() {189		panic("squashed value of wrong size")190	}191	elem := target.ensureDataElem(elems)192	elem.data = append(elem.Data(), data...)193}194func (target *Target) squashResult(arg *ResultArg, elems *[]Arg) {195	var typ *ResourceType196	index := -1197	switch arg.Type().Format() {198	case FormatNative, FormatBigEndian:199		switch arg.Size() {200		case 2:201			typ, index = target.any.res16, 1202		case 4:203			typ, index = target.any.res32, 2204		case 8:205			typ, index = target.any.res64, 3206		default:207			panic("bad size")208		}209	case FormatStrDec:210		typ, index = target.any.resdec, 4211	case FormatStrHex:212		typ, index = target.any.reshex, 5213	case FormatStrOct:214		typ, index = target.any.resoct, 6215	default:216		panic("bad")217	}218	arg.ref = typ.ref()219	arg.dir = DirIn220	*elems = append(*elems, MakeUnionArg(target.any.union, DirIn, arg, index))221}222func (target *Target) squashGroup(arg *GroupArg, elems *[]Arg) {223	var pad uint64224	if typ, ok := arg.Type().(*StructType); ok && typ.Varlen() && typ.AlignAttr != 0 {225		var fieldsSize uint64226		for _, fld := range arg.Inner {227			fieldsSize += fld.Size()228		}229		if fieldsSize%typ.AlignAttr != 0 {230			pad = typ.AlignAttr - fieldsSize%typ.AlignAttr231		}232	}233	var bitfield uint64234	for _, fld := range arg.Inner {235		// Squash bitfields separately.236		if fld.Type().IsBitfield() {237			bfLen := fld.Type().BitfieldLength()238			bfOff := fld.Type().BitfieldOffset()239			// Note: we can have a ResultArg here as well,240			// but it is unsupported at the moment.241			v, bf := target.squashedValue(fld.(*ConstArg))242			if bf != FormatNative {243				panic(fmt.Sprintf("bitfield has bad format %v", bf))244			}245			bitfield |= (v & ((1 << bfLen) - 1)) << bfOff246			if fld.Size() != 0 {247				elem := target.ensureDataElem(elems)248				for i := uint64(0); i < fld.Size(); i++ {249					elem.data = append(elem.Data(), byte(bitfield))250					bitfield >>= 8251				}252				bitfield = 0253			}254			continue255		}256		target.squashPtrImpl(fld, elems)257	}258	if pad != 0 {259		elem := target.ensureDataElem(elems)260		elem.data = append(elem.Data(), make([]byte, pad)...)261	}262}263func (target *Target) squashedValue(arg *ConstArg) (uint64, BinaryFormat) {264	typ := arg.Type()265	bf := typ.Format()266	if _, ok := typ.(*CsumType); ok {267		// We can't compute value for the checksum here,268		// but at least leave something recognizable by hints code.269		// TODO: hints code won't recognize this, because it won't find270		// the const in any arg. We either need to put this const as...

squashPtrImpl

Using AI Code Generation

1import "fmt"2type prog struct {3}4func (p *prog) squashPtrImpl() {5    fmt.Println(p.name, p.age)6}7func main() {8    p := prog{"Naveen", 29}9    p.squashPtrImpl()10}11import "fmt"12type prog struct {13}14func (p prog) squashPtrImpl() {15    fmt.Println(p.name, p.age)16}17func main() {18    p := prog{"Naveen", 29}19    p.squashPtrImpl()20}21import "fmt"22type prog struct {23}24func (p prog) squashPtrImpl() {25    fmt.Println(p.name, p.age)26}27func main() {28    p := prog{"Naveen", 29}29    p.squashPtrImpl()30}31import "fmt"32type prog struct {33}34func (p prog) squashPtrImpl() {35    fmt.Println(p.name, p.age)36}37func main() {38    p := prog{"Naveen", 29}39    p.squashPtrImpl()40}41import "fmt"42type prog struct {43}44func (p prog) squashPtrImpl() {45    fmt.Println(p.name, p.age)46}47func main() {48    p := prog{"Naveen", 29}49    p.squashPtrImpl()50}

squashPtrImpl

Using AI Code Generation

1import (2type prog struct {3}4func (p *prog) changeAuthor(author string) {5}6func (p *prog) changeName(name string) {7}8func (p *prog) squashPtrImpl() {9	p.changeAuthor("Anonymous")10	p.changeName("Anonymous")11}12func main() {13	p := &prog{name: "Go", author: "Google"}14	p.squashPtrImpl()15	fmt.Println(p)16	reflect.ValueOf(p).MethodByName("squashPtrImpl").Call(nil)17	fmt.Println(p)18}19&{Anonymous Anonymous}20&{Anonymous Google}21import (22type prog struct {23}24func (p *prog) changeAuthor(author string) {25}26func (p *prog) changeName(name string) {27}28func (p *prog) squashPtrImpl() {29	p.changeAuthor("Anonymous")30	p.changeName("Anonymous")31}32func main() {33	p := &prog{name: "Go", author: "Google"}34	p.squashPtrImpl()35	fmt.Println(p)36	reflect.ValueOf(p).MethodByName("squashPtrImpl").Call(nil)37	fmt.Println(p)38}39&{Anonymous Anonymous}40&{Anonymous Google}41import (42type prog struct {43}44func (p *prog) changeAuthor(author string) {45}46func (p *prog) changeName(name string) {47}48func (p *

squashPtrImpl

Using AI Code Generation

1import "fmt"2type prog struct {3}4func (p *prog) squashPtrImpl() {5}6func (p prog) squashImpl() {7}8func main() {9p := prog{name: "Go", author: "Google"}10p.squashImpl()11fmt.Println(p.name, p.author)12p.squashPtrImpl()13fmt.Println(p.name, p.author)14}15import (16func main() {17fmt.Println(reflect.TypeOf(i))18}19import (20func main() {21var i interface{} = 1022fmt.Println(reflect.TypeOf(i))23}24import (25func main() {26var i interface{} =

squashPtrImpl

Using AI Code Generation

1import (2func main() {3 p := prog{}4 p.squashPtrImpl()5 fmt.Println(p.x)6}

squashPtrImpl

Using AI Code Generation

1import (2func main() {3    fmt.Scan(&a, &b)4    fmt.Println(squashPtrImpl(a, b))5}6import (7func main() {8    fmt.Scan(&a, &b)9    fmt.Println(squashPtrImpl(a, b))10}11import (12func main() {13    fmt.Scan(&a, &b)14    fmt.Println(squashPtrImpl(a, b))15}16import (17func main() {18    fmt.Scan(&a, &b)19    fmt.Println(squashPtrImpl(a, b))20}21import (22func main() {23    fmt.Scan(&a, &b)24    fmt.Println(squashPtrImpl(a, b))25}26import (27func main() {28    fmt.Scan(&a, &b)29    fmt.Println(squashPtrImpl(a, b))30}31import (32func main() {33    fmt.Scan(&a, &b)34    fmt.Println(squashPtrImpl(a, b))35}

squashPtrImpl

Using AI Code Generation

1import (2func main() {3	fmt.Println("a=", a, "b=", b, "c=", c, "d=", d)4	fmt.Println("p1=", p1, "p2=", p2, "p3=", p3, "p4=", p4)5	fmt.Println("*p1=", *p1, "*p2=", *p2, "*p3=", *p3, "*p4=", *p4)6	fmt.Println("a=", a, "b=", b, "c=", c, "d=", d)7	fmt.Println("p1=", p1, "p2=", p2, "p3=", p3, "p4=", p4)8	fmt.Println("*p1=", *p1, "*p2=", *p2, "*p3=", *p3, "*p4=", *p4)9}

squashPtrImpl

Using AI Code Generation

1import (2func main() {3    fmt.Println("squashPtrImpl called on", ppp)4    fmt.Println("return value is", prog.squashPtrImpl(ppp))5}6import (7func main() {8    fmt.Println("squashPtrImpl called on", ppp)9    fmt.Println("return value is", prog.squashPtrImpl(ppp))10}11import (12func main() {13    fmt.Println("squashPtrImpl called on", ppp)14    fmt.Println("return value is", prog.squashPtrImpl(ppp))15}16import (17func main() {

squashPtrImpl

Using AI Code Generation

1import "github.com/kr/pretty"2func main() {3    prog := &prog{progName: "test1", progVersion: "v0.1"}4    prog.squashPtrImpl()5    fmt.Printf("%# v", pretty.Formatter(prog))6}7&prog{8}

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